可分解压裂球座表面复合膜层及球座及球座制备方法

Decomposable fracturing ball seat surface composite coating, ball seat and ball seat manufacturing method

Abstract

The invention provides a decomposable fracturing ball seat surface composite coating, a ball seat and a ball seat manufacturing method. The composite coating comprises a micro-arc oxidation ceramic coating, a hard coating and a high-temperature-resistant polymer coating, the micro-arc oxidation ceramic coating is coated on the surface of the ball seat, the hard coating is coated on the surface of the micro-arc oxidation ceramic coating, and the high-temperature-resistance polymer coating is coated on the surface of the hard coating. The manufacturing method is simple, convenient, feasible and high in operability. The decomposable fracturing ball seat has high corrosion resistance and erosion resistance in a wellhole. In addition, by the manufacturing method, the ball seat is protected well without having impact on mechanical performance and decomposing characteristics of a base material of the ball seat, and close combining among the coatings and between the coatings and a substrate can be realized.
本发明提供了一种可分解压裂球座表面复合膜层及球座及球座制备方法。该复合膜层包括微弧氧化陶瓷膜层、硬质涂层、耐高温聚合物涂层;所述微弧氧化陶瓷膜层包覆于所述球座的表面;所述硬质涂层包覆于所述微弧氧化陶瓷膜层的表面;所述耐高温聚合物涂层包覆于所述硬质涂层的表面。本发明还提供了具有上述复合膜层的可分解压裂球座及该球座的制备方法。本发明的可分解压裂球座的制备方法简便可行,可操作性好;本发明的可分解压裂球座在井筒内具有良好的耐腐蚀性和抗冲蚀性能。另外,本发明提供的可分解压裂球座的制备方法在对球座形成良好保护的同时,不影响球座基材的力学性能和分解特性,可以实现涂层与涂层之间、涂层与基体之间的紧密结合。

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